TSP:                                     006968077
 TSP Name:                                ENABLE MISSISSIPPI RIVER TRANSMISSION, LLC
 Critical Notice Description:             Critical notice
 Notice Effective Date:                   03/11/2022
 Notice Effective Time:                   09:00
 Notice End Date:                         00/00/0000
 Notice End Time:                         00:00
 Notice Identifier:                       4162
 Notice Status Description:               Initiate
 Notice Type:                             Operational Alert
 Posting Date/Time:                       03/09/2022 07:50
 Required Response Indicator Description: No response required
 Response Date:
 Response Time:
 Subject:                                 MAINLINE UTILIZATION SPW


 Notice Text:


 Due to the potential for maximum utilization of northbound firm Main Line capacity causing a potential supply
 deficiency in the Market Zone, MRT is issuing a System Protection Warning (SPW) effective 9:00 a.m. Friday,
 March 11th, 2022 and continuing until further notice.

 During this time:

 1)	MRT may not schedule any IT or AOR volumes for delivery north of Glendale.

 2)	Firm volumes may be limited to their primary direction of flow on the system north of Glendale.

 3)	Intraday scheduling reductions may be implemented to ensure that nominations match actual flowing
 quantities.
 4)	Long imbalance makeup positions will not be scheduled.

 5)	The availability of balancing and non-ratable services will be limited. Hourly non-ratable nominations, as
 well as the use of imbalance positions must be pre-approved or within the posted limits on MRT s Daily
 Operating Plan. MRT will continue to monitor the pipeline s pressure and imbalances and will, if
 necessary, take further actions, including the issuance of one more Operational Flow Orders (OFO).

 6)	Pool transfers will not be permitted from MRT s Field Zone to its Market Zone.

 7)	Shippers with primary delivery points north of the Glendale Compressor station and a receipt point that
 utilizes South to North transportation, will be required to nominate and source all, or a portion of, their
 total nomination at primary receipt points and/or at available Market Zone supply locations, not to
 exceed applicable maximum receipt point quantities in order to support their primary deliveries.

 8)	Shippers whose firm transportation contracts have Texas Gas Boardwalk ( Boardwalk ) and/or EGT
 Olyphant ( Olyphant ) and/or Noark listed as primary receipt points, must schedule the full amount of
 their primary receipt point quantity at each of those points or, if the primary receipt point is Boardwalk
 and/or Olyphant, at an alternative Main Line receipt point that is north of the primary receipt point
 (Olyphant and/or Noark) if they desire to fully utilize their contract MDQ. Shippers may elect to forego
 nominating their full primary receipt point quantity at any/all of these points, however, such Shipper s
 maximum scheduled and confirmed contract quantity shall be limited to their contract MDQ less any
 primary receipt point quantity at Boardwalk and/or Olyphant and/or Noark that is not scheduled and
 confirmed.


 Shippers whose deliveries are affected by any of the Eight (8) conditions above are encouraged to source supply at
 their primary receipt points, MRT s East Line, Madison Line, MoGas, or reduce applicable delivery volumes.

 Failure to comply with this SPW may result in Shippers being issued an individual OFO.  Nominations will be
 confirmed and scheduled in accordance with MRT s Tariff.

 This SPW will be updated as more information becomes available.

 If you have any questions concerning this SPW, please contact your Customer Solutions representative.



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